12931611 has 64 divisors (see below), whose sum is σ = 23639040. Its totient is φ = 6082560.

The previous prime is 12931601. The next prime is 12931621. The reversal of 12931611 is 11613921.

It is an interprime number because it is at equal distance from previous prime (12931601) and next prime (12931621).

It is not a de Polignac number, because 12931611 - 2²³ = 4543003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12931601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 145255 + ... + 145343.

It is an arithmetic number, because the mean of its divisors is an integer number (369360).

Almost surely, 2^12931611 is an apocalyptic number.

12931611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12931611 is a deficient number, since it is larger than the sum of its proper divisors (10707429).

12931611 is a wasteful number, since it uses less digits than its factorization.

12931611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164.

The product of its digits is 324, while the sum is 24.

The square root of 12931611 is about 3596.0549217163. The cubic root of 12931611 is about 234.7204220090.

The spelling of 12931611 in words is "twelve million, nine hundred thirty-one thousand, six hundred eleven".